Environmental Science and Pollution Research

, Volume 26, Issue 10, pp 9796–9804 | Cite as

Evaluation of hydrochar efficiency for simultaneous removal of diclofenac and ibuprofen from aqueous system using surface response methodology

  • Tahira Qureshi
  • Najma MemonEmail author
  • Saima Q. Memon
  • Handan Yavuz
  • Abdesadek Lachgar
  • Adil Denizli
Research Article


Pharmaceutically active compounds like diclofenac (DFS), ibuprofen (IBP), and other drugs that persist in the environment are listed as emerging contaminants. These escape from normal wastewater treatment plants and find their way to water streams; therefore, alternate treatment processes are needed. Herein, a sorbent material is reported that is prepared through hydrotermal carbonization from dried fruit powder of Zizipus mauritiana L. (HTC-ZM) and applied for simultaneous removal of DFS and IBP. Carbonized material (HTC-ZM) was found as agglomerates of approximately 1 μm particle size with surface area of 1160 m2/g having oxygen functional groups (e.g., COO, O, C=O) on surface. Simultaneous removal of IBP and DFS onto HTC-ZM was studied using response surface methodology with a set of 18 experiments using factors such as pH, amount of sorbent, contact time, and sorbate concentration. Maximum removal efficiency was obtained 88% and 97% for DFS and for IBP, respectively, with adsorption capacity of 2.03 mmol g−1 for DFS and 2.54 mmol g−1 for IBP. Kinetics modeling and “mean free energy” values predicted that sorption is mainly governed by physical interactions followed by “pore filling” mechanism for uptake of DFS and IBP.


Removal of diclofenac Removal of ibuprofen Hydrochar Hydrotermal carbonization Central composite design Ziziphus mauritiana L. 


Funding information

Financial support from Pak-US Science and Technology Cooperation Program, Phase VI (Project No. 6/6/PAK-US/EC/2015/06) is highly acknowledged.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019
corrected publication 2019

Authors and Affiliations

  1. 1.National Centre of Excellence in Analytical CemistryUniversity of SindhJamsoroPakistan
  2. 2.Dr.M.A.Kazi Institute of ChemistryUniversity of SindhJamsoroPakistan
  3. 3.Biochemistry DepartmentHacettepe UniversityAnkaraTurkey
  4. 4.Department of ChemistryWake Forest UniversityWinston-SalemUSA

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